Out Of Stock Shopify Apps – Analytics & Insights

Sink | Push Down Out of Stock ranks #1 for out of stock with 2.4% share — the leader position in a fragmented field where many apps are within striking distance, -62.0pp ahead of Back In Stock,Notify Me: Kbite (64.4%). MB Push Down Hide Out of Stock sits at #3 with 0.7% share, rounding out the top tier. The top 3 apps together control 67.4% of out of stock installs — a clear leadership tier with a meaningful long tail behind them. Notify Me! Back in Stock Alert is the standout mover this month, climbing 3 positions — a momentum signal worth tracking. Worth noting: the top-ranked app and the highest-share app aren't the same here — App Store rank and our market share metric (computed from review counts and other factors) move on independent dynamics, so cross-checking both views matters in this category.

Out Of Stock is a fragmented market — the top 3 apps together hold only 67.4% of installs, leaving Sink | Push Down Out of Stock's 2.4% lead modest in absolute terms and MB Push Down Hide Out of Stock at 0.7% still capturing meaningful share. With this many viable apps, pricing model and integration depth differentiate out of stock options more than rank does.

Sink | Push Down Out of Stock climbed from #7 (Oct 2025) to #1 (Oct 2026) — a 6-position gain among out of stock apps over the charted window. Across the top 5 plotted out of stock apps, 4 improved their ranking while 1 declined — the category is moving upward overall. Sink | Push Down Out of Stock's share held near 2.4% from Oct 2025 to Oct 2026 — a stable install base for out of stock apps rather than active gain or loss.

A 6-position move for the leader over the charted out of stock window is large enough to reflect real merchant adoption shifts, not just App Store noise — Sink | Push Down Out of Stock's climb as of Oct 2026 is the strongest trajectory signal in this chart.

United States dominates demand for out of stock apps with 36.4% of all tracked installs — a single market that effectively defines the category's product priorities. United Kingdom follows at 10.9%, with Australia at 6.7%. Together, the top 3 markets account for 54.0% of out of stock app installs worldwide. Canada (6.2%) and Germany (4.1%) round out the top 5.

With 36.4% of out of stock app installs concentrated in United States, the leading apps in this category typically prioritize United States-based merchants for localization, currency, and support hours — merchants in United Kingdom (10.9%) and other regions sometimes find better fit in apps that over-index outside United States.

Back In Stock,Notify Me: Kbite reached 1,000 reviews in 35 months since launch — the fastest ramp among the top 5 out of stock apps tracked here. Notify Me! Back in Stock Alert crossed the same milestone in 46 months, 11 months behind.

3 apps on this chart haven't yet crossed 1,000 reviews: MB Push Down Hide Out of Stock at 154, Sink | Push Down Out of Stock at 36, Hide & Push Down Out of Stock at 15 cumulative reviews. MB Push Down Hide Out of Stock is closest to the milestone — its current count puts it roughly 15% of the way to 1,000.

Back In Stock,Notify Me: Kbite and Notify Me! Back in Stock Alert reached 1,000 reviews within 11 months of each other — a tight cluster suggesting the top out of stock apps had similarly strong early adoption curves. Merchants picking among these are choosing between apps that all earned merchant trust at a comparable pace.